Stock-Based Compensation	3 Months Ended
Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	(3) Stock-Based Compensation Under the Aceto Corporation 2015 Equity Participation Plan (the “2015 Plan”), grants of stock options, stock appreciation rights, restricted stock, restricted stock units and other stock-based awards (“Stock Awards”) may be offered to employees, non-employee directors, consultants and advisors of the Company, including the chief executive officer, chief financial officer and other named executive officers. The maximum number of shares of common stock of the Company that may be issued pursuant to Stock Awards granted under the 2015 Plan will not exceed, in the aggregate, 4,250 shares. Stock Awards that are intended to qualify as “performance-based compensation” for purposes of Section 162(m) of the Internal Revenue Code of 1986, as amended, may be granted. Performance-based awards may be granted, vested and paid based on the attainment of specified performance goals. Under the Aceto Corporation 2010 Equity Participation Plan (as amended and restated in 2012, the “2010 Plan”), grants of stock options, restricted stock, restricted stock units, stock appreciation rights, and stock bonuses may be made to employees, non-employee directors and consultants of the Company. The maximum number of shares of common stock of the Company that may be issued pursuant to awards granted under the 2010 Plan will not exceed, in the aggregate, 5,250 shares. In addition, restricted stock may be granted to an eligible participant in lieu of a portion of any annual cash bonus earned by such participant. Such award may include additional shares of restricted stock (premium shares) greater than the portion of bonus paid in restricted stock. The restricted stock award is vested at issuance and the restrictions lapse ratably over a period of years as determined by the Board of Directors, generally three years. The premium shares vest when all the restrictions lapse, provided that the participant remains employed by the Company at that time. During the three months ended September 30, 2018, there were no grants of restricted common stock. During the three months ended September 30, 2017, the Company granted 337 shares of restricted common stock to its employees that vest over three years. In addition, during the three months ended September 30, 2017, the Company also issued a target grant of 168 performance-vested restricted stock units, which grant could be as much as 294 units if certain performance criteria and market conditions are met. These performance-vested restricted stock units will cliff vest 100% at the end of the third year following grant in accordance with the performance metrics set forth in the applicable employee performance-vested restricted stock unit grant. For the three months ended September 30, 2018 and 2017, the Company recorded stock-based compensation (benefit) expense of approximately $(24), which includes forfeitures, and $3,132, respectively, related to restricted common stock and restricted stock units. Included in the stock-based compensation expense for the three months ended September 30, 2017 is $2,017 associated with the separation of the Company’s former Chief Executive Officer in September 2017. As of September 30, 2018, the total unrecognized stock-based compensation cost is approximately $4,476.

Stock-Based Compensation

3 Months Ended

Sep. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

(3) Stock-Based Compensation

Under the Aceto Corporation 2015 Equity Participation Plan (the “2015 Plan”), grants of stock options, stock appreciation rights, restricted stock, restricted stock units and other stock-based awards (“Stock Awards”) may be offered to employees, non-employee directors, consultants and advisors of the Company, including the chief executive officer, chief financial officer and other named executive officers. The maximum number of shares of common stock of the Company that may be issued pursuant to Stock Awards granted under the 2015 Plan will not exceed, in the aggregate, 4,250 shares. Stock Awards that are intended to qualify as “performance-based compensation” for purposes of Section 162(m) of the Internal Revenue Code of 1986, as amended, may be granted. Performance-based awards may be granted, vested and paid based on the attainment of specified performance goals.

Under the Aceto Corporation 2010 Equity Participation Plan (as amended and restated in 2012, the “2010 Plan”), grants of stock options, restricted stock, restricted stock units, stock appreciation rights, and stock bonuses may be made to employees, non-employee directors and consultants of the Company. The maximum number of shares of common stock of the Company that may be issued pursuant to awards granted under the 2010 Plan will not exceed, in the aggregate, 5,250 shares. In addition, restricted stock may be granted to an eligible participant in lieu of a portion of any annual cash bonus earned by such participant. Such award may include additional shares of restricted stock (premium shares) greater than the portion of bonus paid in restricted stock. The restricted stock award is vested at issuance and the restrictions lapse ratably over a period of years as determined by the Board of Directors, generally three years. The premium shares vest when all the restrictions lapse, provided that the participant remains employed by the Company at that time.

During the three months ended September 30, 2018, there were no grants of restricted common stock. During the three months ended September 30, 2017, the Company granted 337 shares of restricted common stock to its employees that vest over three years. In addition, during the three months ended September 30, 2017, the Company also issued a target grant of 168 performance-vested restricted stock units, which grant could be as much as 294 units if certain performance criteria and market conditions are met. These performance-vested restricted stock units will cliff vest 100% at the end of the third year following grant in accordance with the performance metrics set forth in the applicable employee performance-vested restricted stock unit grant.

For the three months ended September 30, 2018 and 2017, the Company recorded stock-based compensation (benefit) expense of approximately $(24), which includes forfeitures, and $3,132, respectively, related to restricted common stock and restricted stock units. Included in the stock-based compensation expense for the three months ended September 30, 2017 is $2,017 associated with the separation of the Company’s former Chief Executive Officer in September 2017. As of September 30, 2018, the total unrecognized stock-based compensation cost is approximately $4,476.